The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Aug. 23, 2001
Robert K. Miller, Indianapolis, IN (US);
Z. Gerald Liu, Madison, WI (US);
William C. Haberkamp, Cookeville, TN (US);
Barry M. Verdegan, Stoughton, WI (US);
Murray R. Schukar, Fitchburg, WI (US);
A. Caner Demirdogen, Cookeville, TN (US);
Fleetguard, Inc., Nashville, TN (US);
Abstract
A green uncured pre-form ( ) for an exhaust aftertreatment filter includes first and second sheets ( and ) of regenerable filter material, the second sheet being pleated and forming with the first sheet a plurality of axially extending flow channels ( ) having lateral cross-sectional shapes with two adjacent included angles ( and and ) each greater than 45° and less than 75° and having wall segments ( and and ) with a thickness less than 0.8 mm, a porosity greater than 80%, and an extension height (b) between pleat tips less than 10 mm. Forming apparatus ( ) and methods are provided.